However, in practice, the excursion, transmission refraction and optics aberrance of the laser beam will affect the measuring precision.
但在实际应用中，激光光束的漂移、传输折射以及光学畸变对测量系统的测量精度具有不可忽视的影响。
2
In addition, we research atmospheric refraction influence to space-earth satellite communication, and put forward that amending emission Angle can eliminate excursion between beam and satellite.
Simulation results show that the method can reduce the excursion of beam pointing effectively, and the requirement of beam pointing accuracy for SOTM can be satisfied.